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80409055 = 523576823
BaseRepresentation
bin1001100101011…
…11000111011111
312121022012111011
410302233013133
5131041042210
611551240051
71664315506
oct462570737
9177265434
1080409055
1141430571
1222b19027
131387462c
14a97183d
1570d4d8a
hex4caf1df

80409055 has 8 divisors (see below), whose sum is σ = 96545952. Its totient is φ = 64290528.

The previous prime is 80409053. The next prime is 80409061. The reversal of 80409055 is 55090408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80409055 - 21 = 80409053 is a prime.

It is a super-2 number, since 2×804090552 = 12931232251986050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80409053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8374 + ... + 15196.

It is an arithmetic number, because the mean of its divisors is an integer number (12068244).

Almost surely, 280409055 is an apocalyptic number.

80409055 is a deficient number, since it is larger than the sum of its proper divisors (16136897).

80409055 is a wasteful number, since it uses less digits than its factorization.

80409055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9185.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 80409055 is about 8967.1096235075. The cubic root of 80409055 is about 431.6200917402.

The spelling of 80409055 in words is "eighty million, four hundred nine thousand, fifty-five".

Divisors: 1 5 2357 6823 11785 34115 16081811 80409055